It's been a few weeks now since photos surfaced ofKristen Stewart kissing Rupert Sanders, her Snow White and the Huntsman director, and the22-year-old star is still struggling with the aftermath of the very public scandal.

RadarOnline.com reports she's having a hard time with what she did and that she can't "forgive herself" for hurting boyfriend Robert Pattinsonand everyone else involved.

“Kristen is trying to find some inner peace within herself,” a source close to the actress revealed. "She is reading a lot. She has always been interested in philosophy and spirituality, and she has been reading a lot of different books. Strangely enough, the one author that has really been resonating with her is Gandhi, who she decided to find out more about after watching Eat Pray Love.

“The quote that particularly stands out for her is, ‘The weak can never forgive. Forgiveness is the attribute of the strong.’ While she doesn’t know if Rob could forgive her, that statement has tempered her own regret. The remorse she has isn’t completely gone, but Gandhi’s words have certainly helped her find peace with the whole situation. Kristen isn’t beating herself up over it; she’s accepted that everyone makes mistakes and she has to learn from it,” the source said.

Kristen has been staying mostly out of sight since the news broke of her infidelity, and as Okmagazine.com previously reported, she's pulled out of upcoming projects and appearances, including the final four conventions celebrating the ending of the Twilight saga, according to the movie’s producers. Rob will also not be there.

“The passion and dedication of Twilight fandom has been amazing, and we're out to throw one last giant convention, a final gathering to see old friends that have made up the Twilight family,” a statement from Creation Entertainment said.

"Although Rob, Kristen and Taylor Lautner will not be with us this time out, we will have a super lineup of other Twilight stars, and the weekend will be filled with special events, movie prop and costume displays, contests, panels, auctions, parties, exclusive merchandise, music and much more, including some surprises!"

Meanwhile, Rob has recently braved the media and endured the spotlight to promote his film Cosmoplis. And, as of now, Kristen is scheduled to attend next month's Toronto Film Festival to talk about her new movie On The Road.